gold ore sand washer

All the lighter sand is washed out while all the gold and the heavy sand stays in the sluice This is a natural process no gold is taken out or added 15 gallons of ore condensed into one gallon is 5000 30 gallons of ore condensed into one gallon is 10000 75 gallons of ore condensed into one gallon is 17500 39500 For a Guaranteed